why do i get those weird black spots on a baked roughness map?
I had a problem very similar to this.  I after much trial and error and using different colors, I finally figured out that you MUST have the &quot;roughness&quot; setting of your materials set to less than 1.  If I painted a model with any color with a Roughness set to 1, then it would be mostly Black with few correctly colored spots when imported into Monogame as an FBX.